Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/35034
Titolo: | The PEPSI Exoplanet Transit Survey (PETS) | Autori: | SCANDARIATO, GAETANO BORSA, Francesco BONOMO, ALDO STEFANO Gaudi, B. S. Henning, Th. Ilyin, I. Johnson, M. C. Malavolta, L. Mallonn, M. Molaverdikhani, K. NASCIMBENI, VALERIO Patience, J. PINO, Lorenzo Poppenhaeger, K. Schlawin, E. Shkolnik, E. L. SICILIA, Daniela SOZZETTI, Alessandro Strassmeier, K. G. Veillet, C. Wang, J. Yan, F. |
Data pubblicazione: | 2023 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 674 | Da pagina:: | A58 | Abstract: | Context. Hot giant planets such as MASCARA-1 b are expected to have thermally inverted atmospheres, which makes them perfect laboratories for atmospheric characterization through high-resolution spectroscopy. Nonetheless, previous attempts at detecting the atmosphere of MASCARA-1 b in transmission have led to negative results. Aims. We aim to detect the optical emission spectrum of MASCARA-1 b. Methods. We used the high-resolution spectrograph PEPSI to observe MASCARA-1 (spectral type A8) near the secondary eclipse of the planet. We cross-correlated the spectra with synthetic templates computed for several atomic and molecular species. Results. We detect Fe I, Cr I, and Ti I in the atmosphere of MASCARA-1 b with a S/N ≈ 7, 4, and 5, respectively, and confirm the expected systemic velocity of ≈ 13 km s-1 and the radial velocity semi-amplitude of MASCARA-1 b of ≈200 km s-1. The detection of Ti is of particular importance in the context of the recently proposed phenomenon of Ti cold-trapping below a certain planetary equilibrium temperature. Conclusions. We confirm the presence of an atmosphere around MASCARA-1 b through emission spectroscopy. We conclude that the atmospheric non-detection in transmission spectroscopy is due to the strong gravity of the planet and/or to the overlap between the planetary track and its Doppler shadow. | URI: | http://hdl.handle.net/20.500.12386/35034 | URL: | https://www.aanda.org/articles/aa/full_html/2023/06/aa45539-22/aa45539-22.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/202245539 | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
aa45539-22.pdf | PDF editoriale | 1.59 MB | Adobe PDF | Visualizza/apri |
Page view(s)
25
controllato il 9-mag-2024
Download(s)
7
controllato il 9-mag-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.